We already tried to enable materials in ObjSaveOptions:
ObjSaveOptions saveObjOpts = new ObjSaveOptions();
// Import materials from external material library file
saveObjOpts.EnableMaterials = true;
We already tried to enable materials in ObjSaveOptions:
ObjSaveOptions saveObjOpts = new ObjSaveOptions();
// Import materials from external material library file
saveObjOpts.EnableMaterials = true;
Thank you for contacting support.
We would like to share with you that STL does not have material information, while 3MF in Aspose.3D has very limited support of material.